[:en]Leading Change and the Refraction Layer[:ja]変化と屈折層[:]
[:en]My father used to help people who set off explosions on the surface of the Earth. No, this was not for blowing things up. It is what is called “non-destructive testing” in hunting for oil. With the right kinds of sensors on the Earth’s surface and some sophisticated math, you can develop a image of the Earth’s interior many thousands of meters deep by interpreting the feedback of compression waves from the explosion. Imaging the Earth using compression waves is complex in part because of refraction layers. What’s a refraction layer? A layer whose substance is distinct from the layer above it. Refraction layers change waves. The more distinct the […]
[:en]Obesity and the Peril of Mistaking Cause[:ja]肥満：物事の原因を誤解することの危険性について[:]
[:en]The American Medical Association recently reclassified obesity as a disease after years of resistance and debate. Previously, obesity had been considered a behavioral disorder. What behaviors? Gluttony and sloth. If you were overweight or obese, your doctor would advise you to eat less and exercise more without a second thought. However, with 80% of Americans overweight and 30% in the obese range, the idea that that we are simply a nation of lazy overeaters has become, well, difficult to swallow. There is mounting evidence that we have gotten the cause of obesity wrong. People still continue to get fat, or go through cycles of weight loss and regain. The problem […]
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